Tree and Forest Health
Online ISSN : 2189-7204
Print ISSN : 1344-0268
ISSN-L : 1344-0268
Volume 13 , Issue 4
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  • Eri Yoshikawa, Misato Yoneda, Fumiko Iwanaga, Fukuju Yamamoto
    2009 Volume 13 Issue 4 Pages 191-201
    Published: October 31, 2009
    Released: November 04, 2020
    To clarify the mechanism of parasitism by Scurrula yadoriki (Sieb.) Danser, we conducted a field investigation to identify host plant species, and made morphological and anatomical observations of the development of seedlings of the parasite inoculated on the branches of saplings of Metasequoia glyptostroboides Hu and W.C. Cheng and Acer amoenum Carr. var. matsumurae (Koidz.) Ogata. S. yadoriki was determined to have multiple hosts, including both coniferous and angiosperm trees regardless of evergreen or deciduous species. After seed germination, S. yadoriki formed a primary haustorium that penetrated the bark and cambium of its host. This was followed by the development of an endophytic water-absorbing system consisting of the extending haustorium and rapidly growing host xylem, which occurred simultaneously with the penetration of secondary haustoria from infected portions axially in host branches.
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